#495987 (C++17) No.1078 I love Matrix Construction

• 問題: No.1078 I love Matrix Construction
• ユーザー: yuto1115
• 提出日時: 2020-06-12 22:20:39
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 478 ms / 2,000 ms
• コード長: 3,488 bytes
• コンパイル時間: 6,561 ms
• コンパイル使用メモリ: 208,148 KB
• 最終ジャッジ日時: 2025-01-11 02:39:43
• ジャッジサーバーID （参考情報）: judge4 / judge1

ファイルパターン	結果
other	AC * 22

ソースコード

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#include<bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define rrep(i,n) for (int i = (n)-1; i >= 0; i--)
#define rep2(i,s,n) for (int i = (s); i < (n); ++i)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define pb push_back
#define eb emplace_back
#define vi vector<int>
#define vvi vector<vector<int>>
#define vl vector<ll>
#define vvl vector<vector<ll>>
#define vd vector<double>
#define vs vector<string>
#define vc vector<char>
#define vb vector<bool>
#define vp vector<P>
using namespace std;
using ll = long long;
using P = pair<int,int>;
using LP = pair<ll,ll>;
template<class S,class T> istream& operator>>(istream &is,pair<S,T> &p) { return is >> p.first >> p.second; }
template<class S,class T> ostream& operator<<(ostream &os,const pair<S,T> &p) { return os<<'{'<<p.first<<","<<p.second<<'}'; }
template<class T> istream& operator>>(istream &is,vector<T> &v) { for(T &t:v){is>>t;} return is; }
template<class T> ostream& operator<<(ostream &os,const vector<T> &v) { os<<'[';rep(i,v.size())os<<v[i]<<(i==v.size()-1?']':','); return os; }
void Yes(bool b) { cout << (b ? "Yes" : "No") << endl; }
void YES(bool b) { cout << (b ? "YES" : "NO") << endl; }
template<class T> bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;}
template<class T> bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;}
const int inf = 1001001001;
const ll linf = 1001001001001001001;
// Decomposition of Strongly Connected Components
class scc {
    int n;
    vvi G,rG;
    vi ord,bel;
    vb used;
    void init() {
        rG.resize(n);
        rep(i,n) for(int j : G[i]) rG[j].pb(i);
        bel.resize(n);
        used.resize(n);
    }
    void dfs(int v) {
        used[v] = true;
        for(int u : G[v]) if(!used[u]) dfs(u);
        ord.pb(v);
    }
    void rdfs(int v,int k) {
        used[v] = true;
        bel[v] = k;
        for(int u : rG[v]) if(!used[u]) rdfs(u,k);
    }
public:
    // number of components
    int num;
    scc(vvi G):G(G) {
        n = G.size();
        init();
        used.assign(n,false);
        rep(i,n) if(!used[i]) dfs(i);
        used.assign(n, false);
        int k = 0;
        rrep(i,n) if(!used[ord[i]]) rdfs(ord[i],k++);
        num = k;
    }
    // belonging components(topological order)
    int get(int i) { return bel[i]; }
};
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    int n;
    cin >> n;
    vi s(n),t(n),u(n);
    cin >> s >> t >> u;
    rep(i,n) {
        s[i]--;
        t[i]--;
    }
    int c = n*n;
    vvi G(c*2);
    rep(i,n) rep(j,n) {
        int l = s[i]*n+j,r = j*n+t[i];
        if(u[i] == 0) {
            // !l -> r and !r -> l
            G[l].pb(c+r);
            G[r].pb(c+l);
        } else if(u[i] == 1) {
            // l -> r and !r -> !l
            G[c+l].pb(c+r);
            G[r].pb(l);
        } else if(u[i] == 2) {
            // !l -> !r and r -> l
            G[l].pb(r);
            G[c+r].pb(c+l);
        } else {
            // l ->!r and r -> !l
            G[c+l].pb(r);
            G[c+r].pb(l);
        }
    }
    scc sc(G);
    vvi ans(n,vi(n));
    rep(i,n) rep(j,n) {
        if(sc.get(i*n+j) == sc.get(c+i*n+j)) {
            cout << -1 << endl;
            return 0;
        }
        if(sc.get(i*n+j) > sc.get(c+i*n+j)) {
            ans[i][j] = 0;
        } else {
            ans[i][j] = 1;
        }
    }
    rep(i,n) rep(j,n) cout << ans[i][j] << (j == n-1 ? "\n" : " ");
}
 
 
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